/* ============================================
   Christopher S. Carson — Design Tokens & Styles
   Professional & Clean: Dark navy/charcoal palette
   ============================================ */

/* --- Fonts --- */
/* Zodiak (display/serif) + Satoshi (body/sans) from Fontshare */

/* --- Type Scale --- */
:root {
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* --- Spacing (4px system) --- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* --- Fonts --- */
  --font-display: 'Instrument Serif', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;

  /* --- Radius --- */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* --- Content widths --- */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* ============================================
   LIGHT MODE (default) — Dark Academia
   Aged parchment, warm earth, library aesthetic
   ============================================ */
:root, [data-theme="light"] {
  --color-bg:             #e8e0d4;
  --color-surface:        #ede6db;
  --color-surface-2:      #f0ebe2;
  --color-surface-offset: #ddd5c8;
  --color-divider:        #c9bfb0;
  --color-border:         #bdb2a2;

  --color-text:           #2c2418;
  --color-text-muted:     #5c5040;
  --color-text-faint:     #8a7e6e;
  --color-text-inverse:   #f0ebe2;

  --color-primary:        #4a3728;
  --color-primary-hover:  #3a2a1c;
  --color-primary-active: #2c1f14;
  --color-primary-light:  #d9cfc3;

  --color-accent:         #8b6834;
  --color-accent-hover:   #74562a;

  --shadow-sm: 0 1px 3px rgba(44, 36, 24, 0.08);
  --shadow-md: 0 4px 16px rgba(44, 36, 24, 0.10);
  --shadow-lg: 0 12px 40px rgba(44, 36, 24, 0.14);
}

/* ============================================
   DARK MODE — Dark Academia (deep study)
   Old leather, candlelit library
   ============================================ */
[data-theme="dark"] {
  --color-bg:             #1a1510;
  --color-surface:        #221c15;
  --color-surface-2:      #29221a;
  --color-surface-offset: #1e1812;
  --color-divider:        #3a3127;
  --color-border:         #4a3f33;

  --color-text:           #d4c8b6;
  --color-text-muted:     #9a8e7c;
  --color-text-faint:     #6a5f50;
  --color-text-inverse:   #1a1510;

  --color-primary:        #c4a87a;
  --color-primary-hover:  #d4bc92;
  --color-primary-active: #a88c5e;
  --color-primary-light:  #2e2720;

  --color-accent:         #c49a5a;
  --color-accent-hover:   #d4ae70;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #1a1510;
    --color-surface:        #221c15;
    --color-surface-2:      #29221a;
    --color-surface-offset: #1e1812;
    --color-divider:        #3a3127;
    --color-border:         #4a3f33;
    --color-text:           #d4c8b6;
    --color-text-muted:     #9a8e7c;
    --color-text-faint:     #6a5f50;
    --color-text-inverse:   #1a1510;
    --color-primary:        #c4a87a;
    --color-primary-hover:  #d4bc92;
    --color-primary-active: #a88c5e;
    --color-primary-light:  #2e2720;
    --color-accent:         #c49a5a;
    --color-accent-hover:   #d4ae70;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
  }
}

/* ============================================
   PARCHMENT TEXTURE
   ============================================ */
body {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  background-attachment: fixed;
}

[data-theme="dark"] body,
:root:not([data-theme]) body {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: min(var(--content-wide), 100% - var(--space-8));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--content-default), 100% - var(--space-8));
  margin-inline: auto;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-4) 0;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.header__logo-mark {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
}

.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.header__nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.header__nav a:hover {
  color: var(--color-text);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Mobile nav */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--color-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}

@media (max-width: 768px) {
  .header__nav { display: none; }
  .mobile-menu-btn { display: flex; }

  .mobile-nav.is-open { display: flex; }

  .mobile-nav a {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 400;
  }

  .mobile-nav a:hover {
    color: var(--color-primary);
  }

  .mobile-nav__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
  }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  padding: clamp(var(--space-16), 10vw, var(--space-32)) 0 clamp(var(--space-12), 8vw, var(--space-24));
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-12);
  align-items: center;
}

.hero__subtitle {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.05;
  margin-bottom: var(--space-6);
}

.hero__bio {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 60ch;
}

.hero__portrait {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-border);
  filter: sepia(0.08) contrast(1.02);
}

.hero__flourish {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  color: var(--color-accent);
}

.hero__flourish-line {
  height: 1px;
  width: 60px;
  background: var(--color-accent);
  opacity: 0.5;
}

.hero__flourish-text {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
}

@media (max-width: 768px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__portrait {
    max-width: 220px;
    margin: 0 auto var(--space-8);
    order: -1;
  }

  .hero__bio {
    margin-inline: auto;
  }
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}

.section--alt {
  background: var(--color-surface);
}

.section__header {
  margin-bottom: var(--space-10);
}

.section__label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
}

.section__divider {
  width: 48px;
  height: 1px;
  background: var(--color-accent);
  margin-top: var(--space-4);
  opacity: 0.6;
}

/* ============================================
   PUBLICATIONS GRID
   ============================================ */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.pub-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition-interactive),
              box-shadow var(--transition-interactive),
              border-color var(--transition-interactive);
}

.section--alt .pub-card {
  background: var(--color-bg);
}

.pub-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.pub-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.pub-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.pub-card__role {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.pub-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

.pub-card__arrow {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ============================================
   MEDIA / CHANNELS
   ============================================ */
.channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.channel-card {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition-interactive),
              box-shadow var(--transition-interactive),
              border-color var(--transition-interactive);
}

.section--alt .channel-card {
  background: var(--color-bg);
}

.channel-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.channel-card__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.channel-card__info {
  flex: 1;
  min-width: 0;
}

.channel-card__name {
  font-weight: 600;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.channel-card__handle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================
   LAW PRACTICE
   ============================================ */
.law-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.law-section__content {}

.law-section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  margin-bottom: var(--space-4);
}

.law-section__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.law-section__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.law-section__cta:hover {
  background: var(--color-primary-hover);
}

.law-section__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.law-section__emblem {
  width: 200px;
  height: 200px;
  color: var(--color-primary);
  opacity: 0.15;
}

@media (max-width: 768px) {
  .law-section {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .law-section__visual { display: none; }

  .law-section__cta {
    margin-inline: auto;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-10) 0 var(--space-8);
  border-top: 1px solid var(--color-divider);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}

.footer__links a:hover {
  color: var(--color-text-muted);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}